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Form 990-PFTax year 2025EIN 20-6197750

The Heartstone Foundation

A private foundation in Brookline, MA. Its return for tax year 2025 lists 6 grants and $873,911 paid in grants.

See which foundations fund work like yours Matching by cause, place and grant size

Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2025

    $873,911

    Grants listed
    6
    Assets, end of year
    $13,694,880

  • Tax year 2024

    $1,134,719

    Grants listed
    4
    Assets, end of year
    $13,864,238

  • Tax year 2023

    $1,000,000

    Grants listed
    2
    Assets, end of year
    $13,725,618

  • Tax year 2022

    $960,000

    Grants listed
    3
    Assets, end of year
    $13,954,706

  • Tax year 2021

    $825,000

    Grants listed
    2
    Assets, end of year
    $14,924,136

  • Tax year 2020

    $795,000

    Grants listed
    2
    Assets, end of year
    $14,771,468

  • Tax year 2019

    $565,000

    Grants listed
    2
    Assets, end of year
    $14,838,747

  • Tax year 2018

    $1,062,736

    Grants listed
    2
    Assets, end of year
    $14,916,464

Grants paid in 2025

6 grants, largest first

As listed on the return.

  1. American Friends of Magen David AdomNew York, NY

    General charitable support

    $500,000
  2. Concord AcademyConcord, MA

    General charitable support

    $100,000
  3. The Belmont SchoolDeerfield, MA

    General charitable support

    $90,000
  4. Eagle Foundation of MassachusettsHardwick, MA

    General charitable support

    $85,000
  5. Fidelity CharitableBoston, MA

    General charitable support

    $69,601
  6. Temple Ohabei ShalomBrookline, MA

    General charitable support

    $29,310

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. International aid1 grant $500,00075% of the total
  2. Education1 grant $100,00015% of the total
  3. Community development1 grant $69,60110% of the total

By State

Grants to organizations with a US address, latest year.

  1. New York1 grant $500,000
  2. Massachusetts4 grants $304,310
  3. Ohio1 grant $69,601

Officers, directors and trustees

1 person as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Julie SwartzTRUSTEE Hours 1Pay $0

The return

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